Safety data sheet for Butane
CAS 106-97-8
This is the free preview of a draft SDS for Butane — Sections 1, 2 and 9, generated from the sources named below. The full 16-section draft, with your own company in Section 1, is $5 per document.
Typically documented by: Lighter refills, aerosol propellant.
Draft safety data sheet — preview
Sections 1, 2, 9 of 16
- CAS number
- 106-97-8
- Molecular formula
- C4H10
- Molecular weight
- 58.12 g/mol
- Signal word
- Danger
Hazard classification
- GHS02 — Flammable
- GHS04 — Gas under pressure
- H220: Extremely flammable gas.
- H280: Contains gas under pressure; may explode if heated.
Section 1 — Identification
1.1 Product identifier
Product identifier: Butane
Chemical name (IUPAC): butane
CAS number: 106-97-8
PubChem CID reference: 7843
Synonyms: BUTANE; n-Butane; Diethyl; Methylethylmethane; Butanen; Butani; Butyl hydride; HC 600; A 21 (lowing agent); R 600
1.2 Relevant identified uses of the substance or mixture and uses advised against
Relevant identified uses: Laboratory reagent, industrial processing aid, formulation component, and internal product-stewardship review subject to supplier confirmation.
Uses advised against: Consumer, medical, food, or any other use not covered by the supplier's label, technical instructions, or exposure scenario.
Section 2 — Hazards Identification
2.1 Classification of the substance or mixture
Classification basis: OSHA 29 CFR 1910.1200 Appendix A, aligned to the GHS Rev. 7 hazard classes.
Classification: Flammable Gas, Category 1A (Flam. Gas 1A) [H220]
Classification: Gas Under Pressure (Press. Gas) [H280]
2.2 Label elements
Signal word: Danger
GHS pictograms: GHS02 (Flammable), GHS04 (Compressed Gas)
Hazard statement: H220: Extremely flammable gas.
Hazard statement: H280: Contains gas under pressure; may explode if heated.
Precautionary statement: P210: Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
Precautionary statement: P280: Wear protective gloves, protective clothing, eye protection, face protection, and hearing protection.
Precautionary statement: P203: Obtain, read and follow all safety instructions before use.
Precautionary statement: P377: Leaking gas fire: Do not extinguish, unless leak can be stopped safely.
Precautionary statement: P381: In case of leakage, eliminate all ignition sources.
Precautionary statement: P410+P403: Protect from sunlight. Store in a well-ventilated place.
Section 9 — Physical and Chemical Properties
9.1 Information on basic physical and chemical properties
Physical form: Gas
Appearance: Gas
Odor: Faint, disagreeable odor
Boiling point: -0.5°C (31°F) at 1013 hPa
Melting point: -138.3°C (-217°F)
Flash point: -60°C (-76°F) closed cup
Density: 0.573 g/cm³ at 25°C
Vapor pressure: 1013 hPa at -0.5°C
Water solubility: Solubility in water, g/100ml at 20 °C: 0.0061
Log Pow (log Kow): 2.89
Vapor density: 2 (air = 1)
Lower explosive limit: 1.9%
Upper explosive limit: 8.5%
Auto-ignition temperature: 287°C (549°F)
Viscosity: 7.5 at 300 K; 9.9 at 400 K; 12.2 at 500 K; 14.5 at 600 K (all in uPa.s) (gas)
pH: Not available
9.2 Other information
Other information: Additional classification-supporting physical hazard data should be confirmed from the customer-specific product specification where required.
Sources
- ECHA C&L Inventory — harmonised CLP entry
- PubChem — GHS classification
- PubChem — compound record
- PubChem — names and identifiers
- PubChem — regulatory information
- PubChem — toxicity data
- PubChem — transport information
Sections 1.3 and 1.4 are withheld here because the supplier and emergency contact blocks carry your own company details in the draft you buy. Every draft needs review by a competent person before it is issued.
Measured values for Butane, and where each one comes from
31 measured values for 12 properties, read from 4 public databases. On 5 properties the records differ. Each reading is shown with its own record. Follow any record to read the value at its source.
Boiling point
3 records, -1 to 0 °C
Used with vapour pressure to judge how readily the substance reaches the air you breathe.
- 31 °F
- NIOSH Pocket Guide
Melting point
4 records agree
Fixes the physical state at handling temperature, which the label and the transport class depend on.
- -217 °F
- NIOSH Pocket Guide
Flash point
2 records agree
The lowest temperature at which the liquid gives off enough vapour to ignite. It decides the GHS flammable liquid category.
- Gas: -76 °F (-60 °C) (Closed cup)
- Hazardous Substances Data Bank (HSDB)
Auto-ignition temperature
1 record
The temperature at which the substance ignites with no spark or flame. It sets safe surface and process temperatures.
- 550 °F (287 °C)
- Hazardous Substances Data Bank (HSDB)
Explosive limits
3 records differ
The vapour concentration range in air that will burn. Below the lower limit and above the upper limit it will not.
- Explosive limits in air 1.9 - 8.5%
- Hazardous Substances Data Bank (HSDB)
- 1.9-8.5% by volume in air at ambient temp /from table/
- Hazardous Substances Data Bank (HSDB)
- upper 8.5% ; lower 1.9%
- Hazardous Substances Data Bank (HSDB)
Vapour pressure
4 records differ
The higher it is, the faster the substance evaporates into the workplace air at room temperature.
- 1820 mm Hg at 25 °C
- Hazardous Substances Data Bank (HSDB)
- 2.05 atm
- NIOSH Pocket Guide
- 1820 [mm Hg] @25 °C
- PAC Chemical Database, U.S. Department of Energy
Vapour density
2 records differ
Above 1 the vapour sinks and collects in pits, sumps and low enclosed spaces.
- 2.046 (Air = 1)
- Hazardous Substances Data Bank (HSDB)
Density
6 records differ
Needed to convert between mass and volume on the label, in transport papers and in a spill estimate.
- 0.573 g/cu cm at 25 °C (p>1 atm)
- Hazardous Substances Data Bank (HSDB)
- Liquid density (at saturation pressure; 15.6 °C), kg/cu m: 583.0 /from table/
- Hazardous Substances Data Bank (HSDB)
- 0.6 (Liquid at 31 °F)
- NIOSH Pocket Guide
- 2.11(relative gas density)
- NIOSH Pocket Guide
- 0.6 at 32 °F
- OSHA Occupational Chemical Database
- 0.599 @25 °C
- PAC Chemical Database, U.S. Department of Energy
Solubility
3 records, each a different case
Determines spill behaviour, the right extinguishing media and the correct first-aid rinse.
- In water, 61.2 mg/L at 25 °C
- Hazardous Substances Data Bank (HSDB)
- Very soluble in ethanol, ethyl ether, chloroform
- Hazardous Substances Data Bank (HSDB)
- Slight
- NIOSH Pocket Guide
Partition coefficient (log Kow)
1 record
Indicates whether the substance accumulates in fat or in water, which drives the environmental sections.
- log Kow = 2.89
- Hazardous Substances Data Bank (HSDB)
Viscosity
1 record
Governs how far a spill spreads and how fast it soaks into a surface or a sorbent.
- 7.5 at 300 K; 9.9 at 400 K; 12.2 at 500 K; 14.5 at 600 K (all in uPa.s) (gas)
- Hazardous Substances Data Bank (HSDB)
Odour
1 record
Odour is a warning property only. Many substances are hazardous well below the concentration you can smell.
- Faint, disagreeable odor
- Hazardous Substances Data Bank (HSDB)
These are the public records read for Butane, published here unchanged. Where two records disagree, the draft you buy states the value and names the record behind it, so a reviewer can see what was chosen. Every draft needs review by a competent person before it is issued.
Get the full draft SDS for Butane
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